an official said the fbi investigated the e-mails and uncovered the relationship. they were concerned petraeus' computer was compromised. the observers say he resigned because he believed this was the right thing to do. >> i think there was probably a calculus on the part of the director's you know math here to say this will come out, some way, some time. not a time under my control and i've got thousands of employees who i hold to one standard and when it does come out they're going to say, why isn't this the standard the office was held to? >> members of the house intelligence committee say they'll meet with the fbi to find out more about their investigation. >>> well, this veterans' day weekend, there are some additional hope for those former military members whose service included costly sacrifice. cbs 5 reporter anne makovec shows us the pioneering program that's getting amputees to excel in the most rigorous physical challenges. >> reporter: veteran david lad was injured in iraq in 2006. >> can we just not go there? >> reporter: he doesn't want to talk about